855542272 has 80 divisors (see below), whose sum is σ = 1949453352. Its totient is φ = 371589120.

The previous prime is 855542249. The next prime is 855542287. The reversal of 855542272 is 272245558.

It can be written as a sum of positive squares in 4 ways, for example, as 600054016 + 255488256 = 24496^2 + 15984^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109372 + ... + 116932.

Almost surely, 2^855542272 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 855542272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (974726676).

855542272 is an abundant number, since it is smaller than the sum of its proper divisors (1093911080).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

855542272 is a wasteful number, since it uses less digits than its factorization.

855542272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7609 (or 7593 counting only the distinct ones).

The product of its digits is 224000, while the sum is 40.

The square root of 855542272 is about 29249.6542201784. The cubic root of 855542272 is about 949.3226092576.

The spelling of 855542272 in words is "eight hundred fifty-five million, five hundred forty-two thousand, two hundred seventy-two".